Logitech X-120 Compact Powered Speakers Compact, powered stereo speakers for use with portable electronics or in space-constrained environments 2.5 watts per channel x 2 RMS (5 wpc peak), with 3-inch drivers and bass-reflex enclosures 1 stereo minijack (.125-inch) analog audio inputs accommodate a PC, MP3 player, portable DVD or CD player, or other device Tone control (unified bass/treble) lets you tailor the sound to your music or taste Includes AC power adapter and headphone jack for private listening